baber/WOPTO huggingface dataset:
Patent GB-627759-A (GB)
Title: Improvements in and relating to the manufacture of paper and other cellulosic sheet materials
IPC: D21F1/44
Filed: 1947-02-14
Abstract: 627,759. Increasing brightness of paper. ALLAN, A., HORSBURGH, J., CHESTER, C. A., and WIGGINS, TEAPE, & CO. (1919), Ltd. Feb. 14, 1947, No. 4335. [Class 96] The brightness &c. of paper or paperboard &c. is increased by applying to a wet web, a small quantity of a white or colourless organic liquid such as kerosene, liquid paraffin, or white spirit, of boiling point between 80 and 350‹ C., which evaporates when drying the paper. The liquid, which may be emulsified, may be applied by a lower roll c against which the web is pressed, dipping in a bath d or being supplied by a transfer roller l, just prior to, or intermediate of the dryer rollers. The roll c may be patterned to imprint security markings or a watermark effect. Thin, light papers may be treated to make them sufficiently opaque for writing upon. The paper treated may be loaded with titanium dioxide.
Patent GB-193404-A (GB)
Title: Improvements in rotary pumps and the like
IPC: F04C2/22
Filed: 1923-02-14
Abstract: 193,404. Planche, B. R. Feb. 17, 1922, [Convention date]. Stuffing-boxes, substitutes for.-Relates to a rotary pump of the gyratory piston type. The Specification as open to inspection under Sect. 91 (3) (a) comprises a construction in which the shaft is packed by means of a rubber or dermatine ring 9, expanded over a nut 11 on the shaft, which is enclosed by two carbon discs 10 housed in a socket 12. By the compression of the ring 9 the carbon discs are applied with a pressure against the surface of the socket 12 but rotate with the shaft. This subject-matter does not appear in the Specification as accepted.
Patent GB-1008501-A (GB)
Title: Improvements in regenerative furnaces
Inventor: FALLON JOHN THOMAS
IPC: C21D1/74
Filed: 1962-02-05
Abstract: 1,008,501. Valves. INCANDESCENT Ltd. Feb. 5, 1963 [Feb. 5, 1962], No. 4411/62. Heading F2V. [Also in Divisions F4 and G3] The reversing valve 74, Fig. 8, of a pair of thermal regenerators is operated by a lever 106 pivoted to the piston 110 of an hydraulic cylinder 108. The cylinder 108 is controlled by a piston valve 114, Fig. 9, having five ports, two connected by lines 116, 118 to the opposed working chambers of cylinder 108, another connected to the pressure fluid supply 122, the fourth 122 being an exhaust and the fifth being connected by line 126 to a two-way threeported solenoid-operated valve 128. The valve 128 is operated by a solenoid 134 to connect line 126 to the source of pressure fluid 122 or to an exhaust 130. Changing over valve 128 thus operates piston valve 114 to connect line 116 to the pressure and line 118 to exhaust or vice versa, thus actuate piston 108 to change over the valve 74. The solenoids 134 initiating the change-over valves of a system of regenerators arranged in pairs are operated in sequence by a timing circuit (Figs. 11 and 12, not shown).
Patent GB-1467537-A (GB)
Title: Method of producing calcium fluoride from fluosilicic acid
IPC: C01B33/152
Filed: 1975-01-31
Abstract: 1467537 Calcium fluoride from fluosilicic acid KALI-CHEMIE AG 31 Jan 1975 [15 Feb 1974] 4431/75 Heading C1A Calcium fluoride is prepared from fluosilicic acid by treating it with an aqueous slurry of calcium carbonate at a pH in the range of from 2 to 6 in the presence of sulphate or aluminium ions or both; the molar ratio of the sulphate ions, if present, to the fluosilicic acid is in the range of from 1 : 2 to 1 : 70 and the molar ratio of the aluminium ions, if present, to the fluosilicic acid is in the range of from 1 : 7 to 1 : 100; the calcium fluoride product is separated from the resulting aqueous silica sol, washed and dried. The silica sol produced can be further processed to form gels and active silica, the silica sol may be precipitated, after separation from the calcium fluoride, with an aqueous suspension of slaked lime or magnesium oxide.
Patent GB-450426-A (GB)
Title: Improvements in shirt studs and the like
IPC: A44B1/34
Filed: 1935-02-12
Abstract: 450,426. Studs. TISDALL, F. S. H., and HOPE. S. H., 126, Vyse Street, Birming- ham. Feb. 12, 1935, No. 4433. [Class 43] In a shirt stud or the like, of the type comprising a base a and a detachable head c, and in which the base has a rigidly attached hollow shank a<2> having external lugs a<5>, a<6>, which co-operate with a piercing c<5> in the head, the head being provided with a stem d which is inserted into the shank and engages a resilient resistance such as a spring pressed ball a<3> so that by depressing the head against the resistance and turning it relatively to the base the head may be attached, there are provided in the head, a pair of short stops f, over which the lugs ride in attaching the head, and a pair of long lugs e which serve to position the lugs in register with the piercing when the head is reversely rotated to detach it.
Patent GB-743592-A (GB)
Title: Process for the decomposition of lignin and lignin-containing materials
IPC: D21C11/00
Filed: 1953-02-17
Abstract: In a process for the production of distillable products from lignin and lignin-containing materials at elevated temperature and pressure and in the presence of a hydrogenation catalyst, the lignin or lignin-containing material is treated with hydrogen in an aqueous neutral suspension at a temperature above 300 DEG  C. and a pressure above 350 and below 700 atmospheres in the presence of a Cu-Cr-O catalyst until about 0.9 to 1.8 mol. of hydrogen per 100 g. of lignin have been taken up.  A "Cu-Cr-O catalyst" is a copper-chromium oxide catalyst which may be made in the manner of Adkins or otherwise, e.g. by precipitating the catalyst on the lignin as chromate.  In examples: (1) Scholler lignin on which copper chromate has been precipitated by the reaction of potassium chromate and copper nitrate is heated with water at 320 DEG  C. under a hydrogen pressure of 400 atmospheres for 6 to 7 hours, 1.3 mol. of hydrogen per 100 g. of lignin being taken up, yielding a phenolic oil, from which the phenols, mainly catechol, are separated; (2) Scholler lignin and water are heated with an Adkins copper chromium -oxide catalyst at 340 DEG  C. with hydrogen at 400 atmospheres, 1.6 mol. of hydrogen per 100 g. of lignin being taken up.  The product is distilled to give a mixture of phenols, mainly catechol; (3) Scholler lignin, water, phenol and a copper-chromium oxide catalyst are heated at 310 DEG  C. with hydrogen at 400 atmospheres, 1.8 mol. of hydrogen per 100 g. lignin being taken up, to give as product, after separation of the phenol, an oil which distils over between 200 DEG  and 330 DEG C.; (4) concentrated sulphite liquor containing lignin is neutralized with caustic soda and heated with Adkins copper-chromium oxide catalyst at 320 DEG  C. with hydrogen at 400 atmospheres to give a phenolic oil (1.2 mol. of hydrogen per 100 g. lignin being taken up); (5) in a process similar to (4) copper chromate on kieselguhr is used as the catalyst and 1.3 mol. of hydrogen per 100 g. lignin is taken up. Example (6) describes a continuous process in which a mixture of lignin, water and catalyst is passed upwards, together with hydrogen which has been preheated to 300 DEG  to 400 DEG  C., through a contact tube so that a pressure of 700 atmospheres and temperature of 300 DEG  to 400 DEG  C. is maintained.
Patent GB-906633-A (GB)
Title: Improvements relating to electrical control systems
Inventor: CROWTHER FRED
IPC: H02H7/00
Filed: 1958-02-11
Abstract: 906,633. Protective arrangements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 11, 1959 [Feb. 11, 1958], No. 4450/58. Class 38 (5). In a remote control system such as that described in Specification 700,472, a lamp 25, Fig. 1, is connected across a winding 19 of the pilot relay 3 and the circuit constants are such that when the control switch 6 is in its " start " or " run " position and no fault exists, the RMS voltage across the lamp due to the half wave current in the pilot circuit is insufficient for the lamp to glow. When an earth fault occurs on the pilot circuit, the rectifier 11 is short-circuited so that alternating current flows in the pilot circuit causing the relay to open and the increased RMS voltage across the lamp causes it to glow to indicate the presence of the fault. In another arrangement, Fig. 2, in which discrimination between half-wave and full conditions is provided by a capacitor 22 and a resistor 23 connected across the relay coil 21, the lamp 27 may be connected across the relay coil, across the capacitor or across the resistor, but not in series with the capacitor and resistor.
Patent GB-974633-A (GB)
Title: Improvements in or relating to a machine for washing articles of table-ware
IPC: A47L15/32
Filed: 1963-02-04
Abstract: 974,633. Dishwashing machines. F. W. BLANCHARD Inc. Feb. 4, 1963 [May 21, 1962], No. 4510/63. Heading A4F. A carrier for table ware in a dishwashing machine comprises a tubular support member 61 rotatable about a vertical pivot 53, arms 71 extending radially from the member 61 and upstanding members 77a, 77b, 77c, and 77d on the arms 71 for holding plates and like dishes therebetween and having sloping lower end portions 76, 79a, 79b, and 79d. The separator members have wire loops 78a to 78d at their upper ends, and the plates are supported in the slots between the separator members of two adjacent arms 71, the larger plates being placed in the outside slots. Between the pairs of arms 71 are disposed wire members 81 extending between an inner ring 87 and an outer ring 75 and having shaped formations 85c, 85d, 85e for supporting inverted glass tumblers. A supporting cylinder 91 having a mesh base 93 is provided for silver ware, and at the upper end of the member 61 is provided a wire formation comprising radial arms 109a, 109d arranged alternately with arms 107a, 107c, 107d, 107b for supporting inverted cups. The carrier is adapted to be rotated by impingement on the load of jets of washing liquid from a spray tube 121. Specification 974,631 is referred to.
Patent GB-555677-A (GB)
Title: Improvements relating to mixing machines
IPC: A21C1/14
Filed: 1942-04-03
Abstract: 555,677. Mixing-machines. MORTON, R. H. April 3, 1942, No. 4512. [Class 86] In a mixing machine of the type commonly used in the production of bakery goods, confectionery &c. in which a flat beater implement 5 is served to a rotary shaft 4 which itself is rotated by a clutch-driven three-speed rotary head 4 about the axis 2 of an interchangeable container 6, the beater 5 is formed with a vertically straight outer portion 11 curving at 13 to merge into a horizontal straight foot 12, which is greater in radial length than the distance between the axes 2, 3. The container 6 is formed with a cylindrical wall 8 and a flat horizontal bottom 9 curving quickly into one another at 10, the radius of the bottom 9 being about the same as the distance between the axes 2, 3 plus the radial length of the foot 12.
Patent GB-138715-A (GB)
Title: Improvements in carburettors for internal combustion engines
IPC: F02M9/127
Filed: 1919-02-24
Abstract: 138,715. Lander, H. D. Feb. 24, 1919. Spray carburettors. - Simultaneous air and fuel control is provided by a hand-operated cylinder 19 having air ports 16 and a fuel needle 38. Between adjacent air ports are arranged horizontal ring-shaped partitions 22 decreasing in width downwardly, and the lowermost air ports 18 are of larger area. A dash-pot is provided at 28. The float chamber 1 surrounds the mixing-chamber, to which fuel passes through a conduit 9, and the float 62, of ring shape, is mounted on gimbals to allow for tilting, and controls the fuelinlet valve 51.
Patent GB-1535131-A (GB)
Title: Burners
IPC: F23C7/00
Filed: 1977-02-04
Abstract: 1535131 Burners MITSUBISHI JUKOGYO KK 4 Feb 1977 [10 Feb 1976] 04569/77 Heading F4T A burner 31 comprises a plurality of air nozzles 32, 33, 34, for opening into a furnace 45, the nozzles being arranged unsymmetrical relative to the burner axis, the lower velocity nozzles 33, 34, being designed to have an effective area at outlet of 30-60% of the total outlet area and at least one fuel nozzle 37, 38, is located in each of the lower velocity nozzles, the amount of air issuing from the lower velocity nozzles being not more than 70% of the theoretical amount of air required by the burner. The burner may be of square or round cross-section and combustion air is admitted through ports 39, 40, 41, the latter two ports being of smaller area than the former. The air supply through the ports is controlled by sliding registers 42- 44. The fuel used may be gas or oil and it is stated that by providing high and low velocity air, the amount of NO x  produced is reduced. A fuel nozzle may be located in the highvelocity nozzle 32.
Patent GB-676943-A (GB)
Title: Apparatus for filling containers with measured quantities of liquids
IPC: G01F11/08
Filed: 1951-02-26
Abstract: 676,943. Delivering liquids in measured volumes. DOWNES, H. I. (Soc pour l'Utilisation Rationelle des Gaz). Feb. 26, 1951, No. 4592/51. Class 106(v) Apparatus for  filling each of a succession of containers, such as  cigarette - lighter cartridges 53, with measured  volume of liquid, such as butane gas fuel, comprises two chambers 13a, 13b separated by a flexible diaphragm 14, two inlet and two outlet valves, the outlet valves each communicating with separate containerfilling nozzles 19a, 19b, and valveoperating mechanism to open the inlet valve and close tha outlet valve on one side of the diaphragm when, on the other side of the diaphragm, the outlet valve is open and the inlet valve closed. The liquid is supplied through branch pipes, 20a, 20b and passes to one or other side of the flexible diaphragm 14, which is backed by perforated plates 15, under the control of spring-loaded  valves, one inlet valve 21a and one outlet valve 31a being shown in Fig. 3. Each pair of inlet and outlet valves is controlled by a cam 29 keyed to a spindle 32 having a rod 33 which projects through a slot in an operating lever 34 pivoted at 35. On rotation of the lever in one direction from the horizontal position, one cam 29 is turned clockwise and the other anti-clockwise to operate the valves appropriately so that liquid measured by the movement of the diaphragm from one side to the other is delivered to one of the discharge nozzles, the completion of the discharge being indicated by the fall in pressure shown by the pressure gauge 58 connected to the discharge side, as compared with the similar gauge on the inlet side. The containers are carried on a pair of spring-loaded slides 44 which are connected by cables 48 to the operating lever 34 so that a container to be filled is pressed against a rubber seal 57 on the discharge nozzle while the filled container, whose contents are retained by a valve inside it, is withdrawn for removal. In the intermediate position of the cams, all four valves are closed and as one valve of each pair comes in contact with one of the flats 35, it remains closed at first until lost-motion at the head of a pin 27 is taken up, thus ensuring that the cartridge to be filled is already in place.
Patent GB-1455087-A (GB)
Title: Recording device
IPC: B41J2/50
Filed: 1974-01-31
Abstract: 1455087 Selective printing SIEMENS AG 31 Jan 1974 [31 Jan 1973] 04663/74 Heading B6F [Also in Division G4] A recording device can record 7-segment alphanumeric charaters using a series of 5-segment markers while a strip of recording medium is moving across the series, the second and fourth markers being longer (in the direction of the series) than the others. On reception of a start pulse 34, a BCD coder 21 supplies a character signal, which is converted to 7-segment form at 22, to gate at 23-29 pulses of suitable duration and position from monostables 30-33, to actuate solenoids 10-14 controlling segment markers 4, 5, 6, 7, 8 of the widths shown, to produce the character in 7-segment form on a moving thermosensitive paper strip 2. A measurement trace can also be recorded in another track.
Patent GB-714288-A (GB)
Title: Improvements in or relating to droppingsí¬cleaning arrangements for poultry batteries
IPC: A01K31/04
Filed: 1952-02-22
Abstract: 714,288 Poultry batteries. SHEPHERD & SONS, Ltd., J., and SHEPHERD, R. Feb. 13, 1953 [Feb. 22, 1952], No. 4684/52. Class 5 (2) A scraper-unit for cleaning the droppings trays 17 of a poultry battery comprises a frame 10 guided along rails 19 adjacent to the trays and below the line of cages, the frame 10 carrying a sub-frame 15 on which are mounted scraper elements 21 23, the sub-frame being spring - loaded downwardly so that the scraper-elements contact the trays as the unit travels along. The main frame is rectangular and comprises cross-members 13, 14 interconnecting longitudinals 11, 12 on the ends of which are leather wipers 20 to clean the guide-rails 19. The sub-frame is cruciform and comprises leading members 24 carrying knives 21 and following members 26 carrying wipers 23. The sub-frame is suspended from a longitudinal member 29 of the main frame by springs 30 which urge the sub-frame into contact with the droppings trays 17, the downward movement being limited by lugs 33 on the main-frame longitudinals 11, 12. Specification 714,268 is referred to.
Patent GB-348540-A (GB)
Title: Method of changing the "characteristics" of wireless valves to suit various requirements in wireless transmission and receiving systems
IPC: H03F1/36
Filed: 1930-02-12
Abstract: 348,540. Valve - circuits. ANDERSON, S. J., 211, Belchers Lane, Bordesley Green, Birmingham. Feb. 12, 1930, No. 4709. [Class 40 (v).] The grid bias for an amplifying &c. valve is derived from the voltage drop occurring across an impedance in the anode circuit constituted by a component provided for another purpose. In one example the voltage drop across the primary of a low frequency transformer T1, Fig. 1, coupling valve V2 to valve V1 provides the biasing voltage for valve V1 through lead G, which also biases valve V2 from the voltage drop in the output circuit O1 O2 of that valve. In another embodiment a microphone M, Fig. 3, in the plate circuit of valve V3 provides the grid bias for this valve and its resistance may be varied in accordance with the current flowing in the plate circuit by an electromagnet energized for example, by a tertiary winding on the intervalve transformer T1, giving rise to low-frequency reaction effects. In a modification, the microphone is replaced by a light-sensitive element and the electromagnet by an electric lamp. Specification 209,184, [Class 40 (v), Wireless signalling &c.], is referred to.
Patent GB-932293-A (GB)
Title: Improvements in the heat treatment of polymeric film
IPC: B29C71/00
Filed: 1961-02-08
Abstract: A continuous film of an organic thermoplastic crystallizable polymeric material molecularly oriented in one or both axial directions is heat-treated by passage through the nip between a heated metal roller and a heated roller of resilient heat-resistant elastomeric material, whereafter the film is allowed to shrink and passed between a pair of quenching rollers (Fig. 1, not shown). Polymeric materials specified are polyethylene terephthalate, polyvinyl chloride, polyvinylidene chloride, polyethylene-2,6-naphthalate, polyhexamethylene adipamide, polytetramethylene-1,2-dioxybenzoate, polyethylene-1,5-naphthalate, polyhexamethylene sebacamide, polycaproamide, polyvinyl fluoride, polyvinylidene fluoride, polyethylene, polymerized formaldehyde, and ethylene isophthalate-ethylene terephthalate copolymer.  The heat-treatment may be prolonged by radiant heating, by partial wrap-round contact with one of the heating rollers or one or more additional rollers (Figs. 2 and 3, not shown), or by employing a plurality of similar pairs of heat-treating rollers in series (Fig. 4, not shown).  Heating may be effected to about 220 DEG C. in four stages.  A shrinkage of 1-15% may be allowed.  The metal roller may be chromium plated and highly polished.  Elastomeric materials specified are silicone rubber, chlorosulphonated polyethylene, neoprene, acrylic polymers, or copolymers of vinylidene fluoride and perhaloolefins.  Specification 864,471 is referred to.
Patent GB-316334-A (GB)
Title: An improved gas main stopper
IPC: F16L55/124
Filed: 1928-11-15
Abstract: 316,334. Wilkinson, H. Nov. 15, 1928. Stopping pipes.-A device for stopping a gas main comprises a barrel A threaded at the basa to screw into the main S and containing a sliding block B carried on rods C which project gas-tight through slots in a cap A<2>. The block carries a frame of laminated springs G between which and a diaphragm D are disposed coil springs E. The zone of the diaphragm in contact with the walls is preferably of leather, and felt pads Q are employed at the points indicated to assist in obtaining a tight fit. A felt washer H is arranged in the barrel to reduce the possibility of an escape of gas. The diaphragm is normally housed in the barrel and is brought into operative position by means of a handle 0.
Patent GB-1248724-A (GB)
Title: Hydrostatic bearing
Inventor: ZERBOLA GIORGIO
IPC: B23Q1/38
Filed: 1970-02-02
Abstract: 1,248,724. Slides. RIV-SKF OFFICINE DI VILLAR PEROSA S.p.A. 2 Feb., 1970 [8 Feb., 1969], No. 4877/70. Heading B3B. [Also in Division F2] A hydrostatic bearing for supporting a slide 2 on a fixed machine part 1 has a recess 3 in the slide, fluid being supplied to a central portion of the recess via a duct 4, 5. A restriction is placed in the duct comprising a plug 9 through which is a central passage 8 communicating on the side remote from the recess with a capillary tube 6. The capillary tube may pass through the plug, and the projecting part may be wound helically in the duct. The plug 9 is threaded and screws into an enlarged portion 11 of the duct 5 so as to facilitate removal of the capillary tube 6 for inspection and replacement. A seal-ring 13 is provided in an annular groove 12 between the duct 5 and the plug 9.